How can I do search for a business card that is blank in a certain field of the card?

This sort of search cannot be done directly. Download the business cards, and then examine them as a CSV file.

  1. Download business cards including "Card ID".
  2. Examine the file you have downloaded, and find "Card ID" that have blanks in the fields you are looking for.
  3. Use "Card ID" to search for the cards in Sansan.

Also, for business cards that do not have "Received on" for them, if you change the order of display to "Received on", you can find these at the last pages of the search results.